HomeMy WebLinkAboutItem 03 PPP Operations Committee 03-07-18_Project No. P1-101 At
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SLUDGE DEWATERING AND ODOR CONTROL AT PLANT NO. 1
PROJECT NO. P1-101
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Plant No . 1
Before P1 -100 & P1 -101 Projects
PRIMARY
CLARIFIER DIGESTER BELT FILTER
PRESSES CAKE CAKE
STORAGE LOADOUT
DISSOLVED AIR
SECONDARY FLOTATION
CLARIFIER THICKENERS
After P1 -100 & P1 -101 Projects
Replacement
PRIMARY THICKENING Replacement Rehabilitation
CLARIFIER CENTRIFUGE DIGESTER
DEWATERNG CAKE CAKE
-� CENTRIFUGE STORAGE LOADOUT
IF
SECONDARY
CLARIFIER
• Fiber& PLCs Secondary Truck Thickening- Mix, Age Sludge Cake Drainage and
System Load-Out and Feed Polymer Conveyance Slop Pump
• Electrical System Trickling Filter Systems System Systems
• Cake Silos 1 & 3 Sludge Pump 1 Dewatering- Mix, Age Centrate System Industrial Water
• Cake Silos 2 &4 Trickling Filter and Feed Polymer Sludge Cake Booster Pumps
• Silo Foul Air Sludge Pump 2 System Transfer System System
Collection System Trickling Filter Caustic Soda Bulk Foul Air Collection Water Softener
• Permanent/ Sludge Valve Storage & Feed System Systems System
Primary Truck (Suction Side) Sulfuric Acid Bulk Odor Control Bridge Crane
Load-Out Trickling Filter Storage & Feed System System System
• Secondary Truck Sludge Valve Thickening Centrifuge Bleach Facility Power Building
Load-Out Foul Air (Discharge Side) System Pumps A&D 2 (Engine
Collection System Sludge Feed System Thickened Sludge Bleach Facility Generator)
(PS, WAS, SW,TFS) Transfer System Pumps B&C HVAC System
• Blend Tanks Dewatering Centrifuge Security System
• Bulk Storage System Fire Alarm
Polymer Systems System
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Current Progress
• Construction 97% complete
• Structural and mechanical work complete
• Detailed commissioning plans prepared
• Current focus is electrical terminations
Project Challenges
F Vlore,
• 50% more control points
than the two big secondary __ i = `
projects expansion
p
combined i
• 25% of Plant 1 control
points
• Complications of cake
pump changes
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• 37 systems are spread over -
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50 control panels
Schedule ae
Projection in qI Current
Start Commissioning Sep 2017 Mar 2018
Dewatering Centrifuges Jun 2018 Feb 2019
Thickening Centrifuges Jun 2018 Jun 2019
Demolition Complete Oct 2018 Jun 2019
• Schedule has slipped 8 months in a year
• Mitigation Measures
— Management Oversight Committee
— Panel Task Force
— Streamlined commissioning procedures
O •
• Centrifuges are all new M Staffing Challenges staff
• Both . • • • dewatering system must • '
Consultant Costs
• Longer duration and unanticipated complexity
• Commissioning support from process startup specialist
• Discretionary, but highly recommended
• Key to mitigating startup risks (delays, claims, process
failures, staff limitations)
• Jorj Long has a long track record with other complex
Sanitation District startups
• Already involved in project
• Very effective at training staff
Project Budget Considerations
• Currently project budget is $ 188,328,000
• Additional budget may be needed
• Remaining uncertainties
• Completion schedule
• Global settlement with Contractor
• Staff currently evaluating for annual budget validation
Recommended Action
• Approve a contingency increase of $856,800
( 12%) to the Professional Consultant Services
Agreement with HDR Engineering, Inc. to provide
construction support services for Sludge
Dewatering and Odor Control at Plant No. 1,
Project No. P1-101, for a total contingency
amount of $2, 142,000 (30%) .